Training wheels
= stabilizer (2)
🧩 词语组成解析
training
['trenɪŋ]
n. 训练;培养;（枪炮，摄影机等的）瞄准;整枝法;
v. 训练，培养( train的现在分词);教育;瞄准;整枝;
n. 旋转；车轮（wheel的复数）
🗣️ 情景例句
How much did you estimate this job is going to cost us?
你估计这工作要花我们多少钱？
I used to take a walk in the early morning.
我过去常一大早出去散步。
The basic model will cost about 10% less.
基本型的便宜约10%左右。